Abstract
The effect of global warming on local-scale severe wind hazards caused by an intense tropical cyclone (TC) was investigated using a regional high-resolution atmospheric model. Pseudoglobal warming approaches with various warming scenarios were applied to Typhoon Jebi (2018) that passed through the Kinki district of Japan and induced devastating wind disasters. A higher rise in temperature under warmer climates resulted in a stronger TC just before the landfall on the Pacific coast of western Japan. The enhanced TC significantly increased maximum wind speed around the coastal and/or lower-elevation regions in Kinki. In the Kobe-
Osaka metropolitan areas, for example, the areal-mean maximum surface wind speed showed a robust linear trend with the temperature rise at the height of 2 m (ΔT2m), increasing by 1.16 m s-1 °C-1. The exposed area of violent winds rapidly expanded in the future warming climates. The area size approximately doubled per unit rise in ΔT2m. The results suggested that global warming increases the risks of severe wind disasters in the Kinki district in terms of increased winds over wider areas.
